Memory reactivation or reinstatement and the mismatch negativity |
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Authors: | Ritter Walter Sussman Elyse Molholm Sophie Foxe John J |
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Affiliation: | Cognitive Neurophysiology Laboratory, Nathan Kline Institute for Psychiatric Research, Orangeburg, NY, USA. monterey@bcn.net |
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Abstract: | Previous studies have suggested that the memory underlying the mismatch negativity (MMN) can be deactivated by a period of silence and later reactivated. An alternative is that the memory becomes inapplicable due to a period of silence and subsequently reinstated. Both interpretations rest on the absence of a MMN for a deviant in Position 1 of a train (showing deactivation or inapplicability of the memory) and the presence of a MMN in Position 2 of the train (evidencing reactivation or reinstatement of the memory). In these studies, the standards were fixed across all trains of a given condition. Hence, it is not clear if the MMN elicited in Position 2 requires presentation of multiple trains with identical standards or only a single train. Experiment 1 showed that a single train is sufficient. With data from recent studies, Experiment 2 showed that MMNs in Position 2 of trains are due to reinstatement rather than reactivation of the memory. |
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Keywords: | Event-related potentials Mismatch negativity Memory reactivation and reinstatement |
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